The Card Challenge

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Notes and Credits

This puzzle is also called Langford's Card problem.

Click and drag on the cards to arrange them to help you figure out the solution. Please don't post your answer for the 3 card problem, I included an answer-checker so you can figure out if it's right.

However, feel free to post the answers to other problems, such as the 4 card problem and up! (See the bonus challenge!)

There is really only one unique solution (for 3 cards), the "second" solution is just a reflection of the first.

Enjoy!

People who have solved...

3 Cards
The-Whiz
Coka
Lucario621
Galaxia
MoreGamesNow
Pulse
mathjp
Chrischb
AtomicBawm3
Awesome51
1stCorinthians
MaxTheWeirdo
Waffle27

4 Cards
The-Whiz
MoreGamesNow
Chrischb
AtomicBawm3
Galaxia
Awesome51
1stCorinthians

7 Cards
MoreGamesNow
AtomicBawm3
Awesome51
1stCorinthians

8 Cards
MoreGamesNow

More?!?!

Shared: 13 Jun 2010 Modified: 19 Jun 2013
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